Given most movie posters are completely stitched together like that. So the question is more why didn't they spend an extra $100 (or whatever) on getting it right?

Also, she needs to sack whoever wrote her mini-bio on IMDB:
"This remarkable, one-of-a-kind actress has, since the early 1990s, intrigued film and TV audiences with her glowing, yet careworn eccentricity and old world-styled glamour." What? Glowing yet careworn eccentricity? What even the fuck is that?